<template>
  <div>
    <h1>{{ title }}</h1>
    <child></child>
    <hello></hello>
  </div>
</template>

<script>
import child from "./components/child.vue";
export default {
  components: {
    child,
  },
  data() {
    return {
      title: "你好App.vue组件@@",
    };
  },
};
</script>

<style>
h1 {
  color: red;
}
</style>